Suggestions for Class D amplifiers with Marantz AV7704 and B&W cdm9nt combo for HT.

I am not into class D and not a fan of it. Class D amps are fine to power surround speakers or Atmos overhead ceiling speakers in a HT setup. I would never use class D amps for stereo music playbacks.
While it’s true that today current class D design amps have come a long way and have improved quite a bit compared to older class D designs from back in a day like some 10 to 15 yrs ago or older, but they are still lacking body, volume, air, midrange bloom, full mid-bass & bass power and overall musicality in comparison to very high quality analog or class A & AB designs IMO. Class D can usually sound leaner thinner lacking body and volume and somewhat analytical and lacking that lush analog sound and don’t sound liquid and fluid as good class A & AB designs. It's true that today modern class D designs have smoother highs compared to older class D designs from back in the day. 

@caphill Class D amps are also analog if I am not mistaken. 

@lightfighter2018 have you considered Hypex NC500 based amps like Nord or Apollon?.

@caphill Class D amps are also analog if I am not mistaken.

Class D amps are binary, but not digital. Weird, right?

They are not "digital" because they lack an Analog to Digital conversion stage, however, the output stage switches between on and off.  The rate at which that switching happens is controlled entirely in the analog stage.

Best,
E

I am very very pleased with my two channel system using a Marantz AV8801 as a preamp to my Bel Canto 500m monoblocks. Also in an enclosed cabinet (Salamander), and I have no worries about heat. Prior to the bel cantos I used adcom and B&K amps (200wpc) and moved to the BCs for the extra power and the heat factor. I think the Marantz and Bel Canto work well together. B My cabling was all Nordost but I did change my speaker cables to Acoustic Zen Holograms for a fuller sound with the BCs. 

@geek101 

 I am not familiar with Apollon.  Have heard of Nord. But know nothing about them. Will check both out.  

@caphill  I admit I don't know as much as others here in A-gon, but as I understand it in the class D space - anemic presentation - is still a byproduct that hasn't been resolved to the same substance and - for lack of a better term - meatiness of  the AB class gear.  As stated - everything is better today even class D. Which makes it all the more difficult for guys like me with limited funds to make a decision that I need to live with for a duration vs changing out gears every few months or years.  And trying to figure out which amp goes with what speakers is a daunting task - albeit - part of the fun of audio. But with the advent of SO many more choices than there were just 15 years ago -- it makes it all the more complex an issue of finding what works and what doesn't.

@erik_squires 

Reliance on the SMEs in A-gon has been very helpful.  So thanks to all who take the time to contribute.